Rounding machine



5am, 2%, 119%. .c. w. BAKER ROUNDING MACHINE 6 Sheets-Sheefi 1 Filed March 7, 1946 [mug m CorwinMBakef p his/Iizorgy Se t. 20, 1949.

C. W. BAKER ROUNDING MACHINE 6 Sheets-SheetZ FiledMarch '7, 1946 [raven for Corwz'n M Baker Sept. 20, 19439.

C. W. BAKER ROUNDING MACHINE 6 Sheets-Sheet 4 Filed March 7, 1946 fiavenfor Corwzn VBaker B Izz'sAzzorn L I l I ll p 1949- c. w. BAKER 2,482,092

ROUNDING MACHINE Filed March 7, 1946 6 Sheets-Sheet 5 Invenior Com/in h/Ba/er y/u's/lzfarney' P 1949- c. BAKER 2 2,482,092

ROUNDING MACHINE Filed March '7, 1946 6 Sheets-Shet 6 Egg-15 fnz/en for Com/m h flaker A izongy Sept. 20, 1949 ROUNDING MACHINE Corwin W. Baker, Stoneham, Mass., assignorto United Shoe Machinery Corporation, Flemington, N. J a corporation of New Jersey Application March 7, 1946, Serial No. 652,721

24 Claims. (01. 12-85) This invention relates to machines for performing such operations as rounding or cutting the soles of shoes or other objects, it being especially applicable to a machine of the type of the wellknown Goodyear Universal Rounding and Channeling Machine, Model E, which is, in most respects, as disclosed in Letters Patent of the United States No. 1,030,606, Perry, June 25, 1912.

In existing machines of the character above indicated, the contour of the cut made in the forepart of a shoe being operated upon is determined by a forBpart-guide engaging the shoeupper, the position of the guide being varied by one of a number of cam-disks rotated under the power of the machine once for each operating cycle. operator is advanced by the feed mechanism of the machine, it may be either forced ahead or retarded, depending on the tendency of the operator, slipping between the feeding members. This will destroy the desired synchronism between the rate of rotation of the cam and the rate of advance of the work, causing the form and location of the sole-edge-extension in the forepart of the sole to be inaccurate. An object of this invention is to predetermine and accurately produce such extension. To this end, I combine with a rounding or other knife to which work is advanced, a forepart-guide movable by contact with the shoe-upper in the direcof minimum extension, there being means arranged to set and fix the second member in different positions. For operation upon both shoes of a pair, there is one of these variable members upon each side of the member of maximum extension, and all the-members are prefer- As the work held in the hands of the tion of advance of the work and arranged to vary the relation of the shoe-sole to the knife or other tool which is to perform an Operation upon it. The shape of the upper-contacting surface of the guide preferably is related to the desired form of portions of the rounded sole. This guide in the illustrated machine is constituted by an oscillatory cam, the periphery of which provides the work-guide. To enable the operator to obtain different sole-edge-extensions with a single cam device, there is means for varying the contour of the cam. The guide is preferably adapted to operate upon the soles of both shoes of a pair during its successive movement by them in one direction. Between the operations upon the two ably in the form of segments, the two outer segments being adjustable simultaneously and thereafter fixed in position with respect to the intermediate member.

In machines such as now under consideration, a crease-guide governs the relation of the sole to the knife at the shank of the shoe, and therefore the extension of the sole-edge, the forepartguide being raised. At or near the ballline, control is shifted, the forepart-guide being lowered at one side of the shoe and lifted at the other, the crease-guide respectively losing and regaining control. Since it is desirable that there shall be no interval during which neither guide is effective, it is a further object of this invention not only to maintain the work under the constant control of the guides, but also to blend one width of sole-edge gradually into the other. In the attainment of this object, there is combined with a rounding knife, a crease-guide and a forepart-guide, a member for controlling the position of the crease-guide, and means for moving the member gradually during the movement of the forepart-guide. At one extreme of this gradual movement; which may be both at the beginning and end, depending upon the side of the sole at which it occurs, the controlling member is moved abruptly to shift control from one guide to the other. This controlling member, in the form of a cam, of which there may be one or more, is herein disclosed as associated with the crease-guide, it also being movable with respect to the crease-guide as a result of movement of the forep'art-guide and also after such movement has stopped. The first of these movements effects the graduation inthe sole-edge-extension while :the second causes the transfer of control from :one guide to theother. The cam may be set indifferent positions, and is shown as contacting with an adjustable abutment-portion upon the forepart-guide when the work is held up by the operator against the crease-guide. At that extreme of movement of the cam when the forepart-guide assumes control of the Work, the crease-guide, though no-longer active, is left floating in the crease of the shoe, so that it does not disturb the guiding action upon the shoe provided by the forepart-guide.

tangentially of the cam-surfaces upon the camdisk I20 may be changed by adjustment of the block I34. The roll may thus be brought into the desired relation to any one of the cam-surfaces with which it is to coiiperate. The axis of the roll substantially coincides with that of the pivot-shaft 50, so during the oscillation of the forepart-arm 58 the position of the roll is not materially aiiected. The cam-disk I20 can be set so that one or another of the cam-surfaces is brought adjacent to the roll I30. For this purpose there is an opening I42 in the cam-disk for each cam-surface, each opening being adapted to receive a pin I44 clamped in place in the end of a link I46, which is pivoted to the lower extremity of a downward extension I48 from the arm I00 below its pivotal point. As the forepart-guide F is lowered by the clockwise rotation of its arm 58 upon depression of the rod I06, the arm-extension I48 swings to the left (Fig. 2). This, through the link I46, turns the cam-disk I20 counterclockwise, the upmost cam-surface being held in contact with the roll I30 by the work, pressed upwardly against the crease-guide 28. As this cam-surface is shifted along the abutment-roll, its form, according to the selection made, will cause the arm 34 and the creaseguide 28 to remain at rest, to rise or to fall. Therefore, until the forepart-guide in its descent assumes control of the width of the sole-extension, such control is maintained by the creaseguide, and, according to the cam-surface which governs it, the form of curvature of one portion of the sole-edge into the other may be determined. When the forepart-guide has reached the end of its downward travel and is thus ready to position the work, movement of the arm 96 ceases, but depression of the rod I06 continues to turn the arm I00, the spring I04 yielding. This so rotates the cam-disk I20 that the depression I28 at the end of the active cam-surface comes beneath the roll I30. The space provided by the depression frees the arm 34 from the retaining action of the roll, leaving the creaseguide 28 free to float in the crease under the infiuence of its weight without any locating effect upon the work.

Now to describe the guide F, which is to control the sole-edge-extension about the forepart of the shoe and referring particularly to Figs. 7 to 10, the slide 68 has projecting outwardly from it at right angles a stud I56, about which the casing I50 of an antifricti-on bearing may oscillate. Fast upon this casing is a carrier-disk I60, which has an outward projection I6I, the arcuate peripheral end I62 of which furnishes the worklocating surface for the maximum edge-extension. At the left of this guide member I62 is an arcuate guide member I 64 for a right shoe, and at the right ofthe member I62 a similar guide I66 for a leftshoe. Each of the members I64 and I66 has an inward projection I61 which telescopes upon an arm I 68 extending outwardly from the periphery of the disk I60. The projections and arms are so curved that, as each projection telescopes upon its arm, the corresponding member I64 or I66 is swung about .a point closely adjacent to the end of the central guide member I62. The positions assumed by these outer members I64 and I66 in their adjustment may be between an outward extreme, in which their peripheries continue that of the member I62 along arcs of equal radii, and an inward extreme, in which they are inclined inwardly from the member I62. In the latter case, the slope of the member's I64, I66, resulting from their ec centricity with respect to the member I62, corresponds to the desired variation in the soleedge-extension. The result of this arrangement is to furnish an adjustable work-locating cam having peripheral guide-surfaces for the foreparts of both shoes of a pair which will produce a sole-edge-extension uniform in width throughout its control by the device F, or one which increases variably between its extremities. To adjust the members I64 and I66 together, so they have similar elfectsupon the two shoes of a pair, two pinions I10, I10 are rotatable about studs I12, I12 set in the disk-projection I6I. Each of the pinions is pivotally connected by a link I14 to the projection from either the member I64 or I66, while one of the pinions has attached to it an arm I16. The inner end of the arm has threaded through it a screw I18 by which it may be turned, or the screw may be caused to bear upon an annular surface I of the disk I60 to fix the arm in the position to which it may have been moved. Therefore, by a single actuation of the arm the guide members I64 and I66 may be swung simultaneously about their inner points adjacent to the member I62 to give, at their opposite ends, differentminimum sole-edge-extensions.

For operation upon a pair of shoes, the guide device F is initially turned to its extreme counterclockwise position and is there held temporarily for release by the operator, the outer extremity of the member I64 furnishing the effective guide for a right shoe. It then turns, under the influence of the work, until the member I 62 comes into contact with said work, when it is again temporarily retained for the completion of the operation upon the right shoe. The member I62 then locates the left shoe initially, after which release of the device F permits the member I66 to be turned by engagement with the work, the device coming to a stop to allow the completion of the operation upon the left shoe under the control of the outer extremity of the member I66. Thereafter, the device is returned automatically to its initial position. For thus controlling the guide device F the following means is provided.

In an annular groove in the outer face of the disk I60 is a torsion-spring I84. One end of this spring is attached at I86 to a wall of the groove, while the other end is fixed to a pin I88 set in the slide 68. The spring is held against displacement from the groove by cross-bars I90 and its force is exerted to draw a stop-projection I 92 from the periphery of the disk against .a latch I94 (Fig. 8). The projection is adjustable circumferentially of the disk I60, it being upon a segment I96 recessed into the periphery and provided with a lug I98 extending along the side of the disk and slotted to receive a clamping screw 200 (Fig. 9). In the segment is a depression 202 which the lat-ch I94 engages to retain the guide F positively against reverse movement. When the guide is shifted, under the influence of the work, to the opposite extreme of its travel, a

projection 204 limits its movement. This projection is adjustable, similarly to the projection I92, as is best shown in Fig. 10, but is without the accompanying depression. Substantially midway between the projections I92 and 204 there is a depression 206 in the periphery of the disk I60. The latch I94 for the disk projects from the inner side of an arm 208 pivoted upon the slide 68 and extending inwardly therefrom 9 mug. s1. mm arm has an extension 2411, and joined Ito this and the end of the stud ii -5.5 a tension-spring 2112 which holds the iatchyieldi elsv against the peripheny of the disk, so it ierrter depressions 20.2 and .206. Who latch may be raised :finom the depressions :at the will our the operator. For this purpose, :an upward extension 12M :01? the forepartsgage-arm $6 1331- ries a solenoid 2216 -"(Fig. :5) ,\the normaily lowered plunger 2M3 of which has :secured 'to it an :arm 2Z0 extending forwardly beneath the latch-amnextension 21:0. In circuit with the solenoid :is an amillustrated source of current and a switch 222 KFigs. 1 and i6), normally :open. Supported upon ithe rframe-zco'lumn 224 is a bracket 226 clamped at 22] for adjustment fore :and aft of the ma- ;chi-ne, this carrying a laterally adjustable brackaet 22B clamped at 2:29 and to the :forward extrernity of which :is hinged a knee-lever230. By varying the positions of the two brackets the jever may be brought to a position convenient for :a'ctuation 'by :the operator :to close the switch, energize the solenoid, and trip "the latch I94 :to release lth'eguide device F.

describing the operation :of the machine,

there will be outlined the action 'of the elements upon the right and deft shoes of a pair in which the sole is to have a certain extension at both asides of the shank, a less extension along the -forepart hetween the inside ball-line andihe outside tip-line, :and a gradually increasing extenlfrom the outside tip -line to the outside :balddine, there to merge :i'n'to the edge at the shank. This particular relation of edge-widths is taken only for :the purpose of il'lustrati'on, the form of the rounded sole iproduced depending upon the shape and adjustment of the :members 464,, +66 and the contour of the chosencontrollingsurface on the disk 1 20. in each of Figs. :11 to 14, ."l-nelusive, representing the operations upon a right shoe, and Figs. :15 to 18, inclusive, the corresponding operations upon :a. left shoe, to indi- -'cates the outline of the shoe-upper (as viewed from above) which engages the guide :d'evice -F, b the :crease-line which receives the guide 28, c a iolock-sole attached to the upper and which is to be rounded, and d the line along which the chopping knife 22 has operated :to round the sole, =as'd'etermined by the guides 28a-nd.-F. The maximum extension of the forepart 'sole-edge has been arranged for by adjustment of the guide member $62 through variation the location of the slide '68, :and the minimum extension ?by simultaneous -a'djustment of inclination of the members 164 and [6.6 through actuation of the arm I16. 'The crease-guide 2:8 is in its lowest position, tree to rise as the work is pressed :again-st' it, to :an extent determined by the contact of .a selected :one of the -ca:m-s'urfaoes 122, 124 and 126 upon the disk 120, with the :abut- .ment-roll 130 adjustable upon the forepartguide-arm 0. It will beessume'd that the chos- =en :surf-ace'is that designated as 4 24., which .Jgradual'ly decreases radius from left to right in Fig. -2. The guide device F in the extreme position of its counterclockwise movement about the axis 0f the disk Hill, as viewediirom -the front of the machine, where it was locked by the en- 'zgag'ement of the latch 494 within the recess 202 after the preceding pair of shoes had boen operated upon, and is raised to :its inactive relation by thespringdZ.

The operator rapplies the crease of the rig-ht :shoe to the guide :28, lifting this untilit is engaging atoll I60, an allows the feedearm 0 send itherbcttomerest 24 to grip-and feed the work :ficrwamd :from :right to left. The wounding .cut is started slightly behind the inside iheelebreast dine :(at Fig. :11.) so that the guide 28 will be properly seated in the crease and the desired sole edge extension obtained when the out reaches the heel-breast line. The chopping knife, therefore, rounds the sole at the shank to the width indicated :near the beginning of its :cut in .Fig. T1. As the inside :bail-line tapproxi- :matel-y tat ae approaches :the operating Point, the treat-lie :is depressed :by the operator and the 'device F thereby Flowered (Fig. 12).. As the arm M10 is turned by :the treadte-rod $06, the link 44.6 rotates the :camdisk .120 so the diminishing cam-surface I211, :acting against the abutment- -rol1 i1 311, permits the upward pressure of the work to gradually lift the :creaseeguide. Under the control of the cam-surface 124., the width of the edge-extension gradually decreases :and, as the device .F :arrives inactive position rand its descent is arrested by :the stop :1 08, the zfinal movement on the arm hit, as the spring r1204 yields, "com- :pletes the rotation of the .cam-zdisk. -lorings a depression 128 beneath the roll 1310, so the crease-guide 2B is abruptly "released when the .roll I30 rides on "the corner of camssurface H25 adjacent to the depression. Although 0011- -0IG1e0'f the work has passed to the "forepart-gnide the crease-guide is left floating in the :crease of shoe, lit extending EaCIOSS the welt. It thus rexents on said welt unitorm transverse pressure, avoiding the danger of deforming the surface ithrough indenting it zhecanse of partial engagemerit. The action of the cam-idisk I20 causes the shank-extension to blend gradually into the forepart-extension with :a predetermined curvature, which :is fully governed by the crease-guide, this relinquishing contro'l :only when it has been assumed :by the :forepart-rguide. Consequently, there 'is no periodfin which ungouerned manipuiation by the operator Jfixes the width of the extension. V

Di the device the member IB4 receives contact of the \upper or the fiorepart 0f the shoe near its outer extremity, so the sole edge is car- .i'ied in to its minimum width at finn'de :ballline (at o)" Since the latch EIEM is now in the depression 202., the device is held against rotation, and the outer end :of member IB'4 furnishes 'a itemporazrily fixed :guide for the 'work until :a point near the :end of the outside tipzline tat isreached, from the edge should Joe gradually increased in width to the maximum at the outside hall-dine (at g) 'Wmen'th :roundin-g :cut zrceaches the outside tip-line *(at 79)., the operator presses. the knee-lever .230 to close the circuit of the solenoid L2! 6. withdraws the :latch 19 3., so the guide device F is )free to rotate. the work is fed to the left, the member *IM is turned b it and, because for the increasing radius of the member H64 the work is moved down, :away from the line ofaction of the chopping knife. The width :of the edge .is therefore gradually increased to the maximum extent 'determined :by the member 462, in the vicinity of the outer :ball lin'e (:at :9 :as shown in Fig. 13. iii-nee, in this portion of the operation, the fore- ;part-rguide is advanced by and :at the same .rate :as the work, which produces this change in edgeextension as it travels, the operator, by forcing or retarding the feed of the work, cannot destroy the correct relation between the fcrepartguide stopped by the left-hand end of the surface 124 in band the periphery .of the "work, :as the case when a cam driven under the power of the machine governs the position of a guide past which the work is fed. In the present invention, if the feeding of the work should be accelerated, so too is the rotation of the forepart-guide, and the form and peripheral relation of the sole-extension will be the same for all shoes with any one setting of the forepart-guide. At the outside ball-line (at g), the operator releases the treadle, and, as shown in Fig. 14, when the rounding operation runs into the shank the crease guide 28 takes over the control of the shoe from the forepart-guide F, which is lifted by the spring 82. More specifically, the arm I is elevated by the springs I04 and B2, and, through the link I46, turns the cam-disk I20 clockwise (Fig. 2), forcing the roll I30 out of the depression I28, so said roll again contacts with the cam-surface I2 1. Therefore, the work is put promptly under the control of the crease-guide 28, and the camsurface I24 produces an effect opposite to that at the inner side of the shoe, gradually bringing the width of the edge-extension from the maximum down to the lesser width desired in the shank. The rounding out continues along the outside of the shank, and is run out of the sole after the outside breast line (at Z) has been reached. When the device F reached its central position, as above described (at g, Fig. 13), the latch I94 entered the depression 206 in the disk Hit. Accordingly, when the operator separates the rounded right shoe from the device, the latter is held against rotation.

The left shoe is first positioned by the creaseguide 28 (Fig. 15), made near the outside breast-line (at l) to the outside ball-line (at g), the forepart-guide F being raised. At the outside ball-line (y) the operator treadles to lower the guide F, the maximum-extension member I62 ofwhich engages the shoe-upper (Fig. 16). Similarly to the operaticn upon the right shoe, rotation of the camdisk I 28, by its connection to the forepart-guidearm Illfi has first allowed the crease-guide to rise gradually, and then to float in the crease just as the guide member IE2 is in full control. At this time the operator actuates the knee-lever 2363 so the solenoid 2l6 is energized to remove the latch I94 from the work is fed forward the device F turns, with the periphery of the member I66 moving with it at the same rate, thus producing accuratel the radual decrease of the sole-extension from the maximum at the outside ball-line (at g) to the minimum at the outside tip-line (at f). This brings the work to the position of Fig. 17. The projection 204 has now reached the latch I94 and is there held by engagement of the advancing work, so an edge of uniform minimum width is produced from the outside tip-line to the inside ball-line (at e) Here, the operator releases the device F (Fig. 18), the cam-disk I29 causing the crease-gage 28. to locate the work for the rounding at the inside of the shank before the forepart-guidev has become ineffective. At the inside breast-line (at h, Fig. 18), the operation upon the shoe has been completed and it is removed from the machine. As soon as the member I66 left the work, upon release of the treadle, the spring I84 acted upon the disk I60 to rotate it to its initial position, as shown in Figs. 18 and 11, ready for operation upon the right shoe of the succeeding pair.

Having thus described my invention, what I from the start of the cut depression 206. As the a claim as new and desire to secure by Letters Patent of the United States is:

1. In a machine for rounding a sole attached to a shoe-upper, a rounding knife to which the sole is advanced, and a forepart-guide movable in the direction of advance of the work by contact with the shoe-upper and arranged to vary the relation of the shoe-sole to the knife.

2. In a machine for rounding a sole attached to a shoe-upper, a rounding knife to which the sole is advanced, and a'forepart-guide having a cam-surface arranged to engage the shoe-upper and being movable thereby in the direction of its advance, said surface alsohaving a slope corresponding to the desired variable extension of the sole edge. 7 v

3. In a machine for rounding a sole attached to a shoe-uppen'a rounding knifeto which the sole is advanced, and a forepart-guide movable by contact with the shoe upper and having a cam surface arranged to position the sole in varying relation to'the knife whereby the. sole edge is trimmed with a'varying extension.

4. In a machine for rounding sole attached to a shoe-upper, a rounding knife to which the sole is advanced, and 'a forepart-guide comprising a cam movable by contact with the shoeupper and having a surface arranged to vary the relation of the sole to the knife, and means arranged to vary the contour of the guiding surface of the cam.

5. A guide for shoe machines comprising a rotatable member having a peripheral work-engaging surface, a second member variable in position upon the rotatable member and having a workengaging surface in alinement with and continuing that of the rotatable membenand means arranged to fix the second member in different positions.

6. A guide for sole-rounding machines comprising an oscillatory segment havinga peripheral work-engaging surface for locating a sole to give the maximum sole-edge-extension*, a member variable in position withv respect to the segment and having a work-engaging surface continuing that of said segment to a point of minimum soleedge-extension, and means arranged to fix the member in positions giving different minimum sole-edge-extensions.

'7. A guide for shoe machines comprising a central oscillatory segment having a peripheral work-engaging surface for locating a sole to give the maximum sole-edge-extension, members movable with the segment at opposite sides thereof and each having a work-engaging surface continuing that of said segment to points of minimum sole-edge-extension, and means arranged to move the opposite members simultaneously to different positions withrespect to the segment and to fix them in such positions.

8. A guide for shoe machines comprising a supporting member, a carrier oscillatable upon the supporting member and provided with a workengaging projection and a guideway in each side of the projection, shoe-engaging members movable in the guideways, and means arranged to move the members simultaneously and to fix them in different positions.

9. A guide for shoe machines comprising a supporting member, a carrier oscillatable upon the supporting member and having a work-engaging surface, a work-engaging member variable in position upon the carrier and cooperating with said surface, and means for urging thecarrler to one extreme of its oscillatory movement.

10. A guide for shoe machines comprising a supporting member, a carrier oscillatable upon the supporting member and having a work-engaging surface, a work-engaging member variable in position upon the carrier and cooperating with said surface, means for urging the carrier to one extreme of its oscillatory movement, and a latch movable upon the supporting member for retaining the carrier in different positions.

11. A guide for shoe. machines comprising a supporting member, 'a carrier oscillatable upon the supporting member and having a work-engaging surface and spaced stop-projections, a work-engaging member variable in position upon the carrier and cooperating with said surface, means for urging the carrier to one extreme of its oscillatory movement, and a latch movable upon the supporting member for engagement by the stop-projections.

12. A guide for shoe machines comprising a supporting member, a carrier oscillatable upon the supporting member and having a work-engaging surface, a work-engaging member variable in position upon the carrier and cooperating with said surface, means for urging the carrier to one extreme of its oscillatory movement, a latch movable upon the supporting member, stop-projections upon the carrier for engagement with the latch, and means arranged to fix the projections in different positions. upon the carrier.

13. A guide for shoe machines comprising a supporting member, a carrier oscillate-bio upon the supporting member having a work-engaging surface, spaced projections; and spaced depressions, a work-engagin member variable in position upon the and cooperating with said surface, means for urging the carrier to one extreme of its: oscillatory movement, and a latch movable upon the supporting member for engagement with the. projections and entrance into the depressions, to. retain carrier in different positions.

14. A guide. for" shoe: machines comprising a movable support, a. carrier" oscillatable upon the support and having awork-engagingsurface, a work-engaging member variable in position upon the carrier and cooperatimg with said surface, a latch movable upon the support for retainingthe carrier in different positions, means for urging the carrier normally to one extreme of its oscillatory movement, and electrical means mounted upon the support for releasing the latch.

15, In a sole-rounding machine, arounding knife, a supporting member, a carrier movable upon the supporting member and having a workengaging surface for locating-a sole with respect to said knife to give the maximum rounded soleedge-extension, means arranged to fix the supporting member in positions giving different maximum extensions, a member mounted upon the carrier and having a work-engaging surface continuing that of the carrier to a point of minimum rounded sole-edge-extension, and means arranged to fix the member in positions giving different minimum extensions.

16. a sole-rounding machine, a roundin knife, a crease-guide and a forepart-guide each movable to position thework differently with relation to the knife, means for positioning. the crease-guide relatively to the knife comprising an abutment associated with the forepart-guide and a member associated. with the crease-guide and movable with respect thereto in engagement with the abutment as. a resultof movement of, the

-12 forepart-guide to control the position of the crease-guide.

17. In a sole-rounding machine, a rounding knife, a crease-guide and a forepart-guide each movable to position the work differently with relation to the knife, a means for limiting the work positioning movement of the forepart-guide, a member associated with said crease-guide and movable with respect thereto as a result of movement of the forepart-guide to control the position of the crease-guide, and means for continuing the movement of the member after the forepartguide has reached the limit of its work positioning movement.

18. In a sole-rounding machine, a rounding knife, a crease-guide and a forepart-guide each movable to position the work differently with relation to the knife, a cam movable with the creaseguide and with respect thereto, an abutment adapted to be engaged by said cam, and means operated in response to the movement of the fore- 'partguide for moving the cam with respect to said crease-guide whereby the position of the crease-guide is varied.

19. In a sole-rounding machine, a rounding knife, a crease-guide and a forepart-guide each movable to position the work. differently with relation to the knife, a controlling member movable with the crease-guide, said member also being movable with respect to the crease-guide for controlling the position of crease-guide, a member actuated by the operator and connected to move the controlling member, and means for transmitting the movement of the operator-actuated member yieldably to the forepart-guide.

20. In a sole-rounding machine, a rounding knife, a crease-guide and a forepart-guide each movable to position the work differently with relation to the knife, the forepart-guide having associated therewith an abutment-portion, an arm for supporting said crease-guide, a cam mounted upon said arm and. movable thereon in contact with the abutment-portion, and means for moving the cam.

21. In a sole-rounding machine, a. rounding knife, a crease-guide and a, forepart-guide each movable to position the workv differently with relation to the knife, the forepart-guide having associated therewith an abutment-portion, means for varying the position of the abutment-portion with respect to the. forepart-guide, a. cam associated with the crease-guide and, movable with respect thereto in contact with the abutmentportion, and means for moving the cam.

22. In a sole-rounding machine, a rounding knife, a crease-guide. and a forepart-guide. each movable to position the work differently with relation to the knife, a cam associated with and movable with respect to the crease-guide, an abutment adapted to be engaged by said cam, means arranged to set the cam in different positions with respect to the crease-guide, and means for, moving the cam.

23. In a sole-rounding machine, a rounding knife, a crease-guide and a forepart-guide each being movable to position the work differently with relation to the knife, and connections between said guides through which the creaseguide is positioned by the forepart-guide, said connections being operable in response to the final movement of the forepart-guide into its operative position to disconnect said guides whereby the crease-guide is permitted to float freely in the crease. while the forepa-rt-guide is positioning the work.

24. In a sole-rounding machine, a rounding REFERENCES CITED knife, a crease-guide and a forepart-guide each movable to position the work difiez'ently with rela- The following references are of e ord i the tion to the knife, and means normally connectfile Of s E me in; said guides by which the crease-guide is 5 UNITED STATES PATENTS positioned relatively to the forepart-gmde, said means including a member which is associated Number Name Date with and is movable with respect to the crease- 234360 Jones p 33 guide successively to vary the relation of the 599,602 French et 1398 crease-guide to the forepart-guide and the to 10 1,019,354 Cody 1911 release the crease-guide whereby it is permitted 1,092,399 Cufi 1914 to float freely in the crease.

CORWIN W. BAKER. 

